A 3 m deep basement has a equilateral triangle shape and a two story timber frame house above has a square shape.
The base of the square and triangle alignThey share a side, however both have parts "outside" of the triangle are withinother, as can be seen in the bounds ofsketch below. The red dash is the square and parts outsidebasement, the bounds ofblue is the squarehouse.
The real shapes are different but similarities apply.
Can a basement form part of the foundations for the house in conjunction with other foundations not part of the basement?
Are there any risks or known issues with this concept?
A basic (roughly to scale) diagram is below. The basement will likely be 3m deep.
The red dash is the basement, the blue is the house.
